Boat chock



.A. P. scHA-r BOAT OHOCK Majr 26,--193 1.

Filed March 1930 I \E3 Fig.2.

Patented May 26, 1931 UNITED STATES PATENT orsics BOAT CHOGK Application filed March 17, 1930, Serial No. 436,558, and in the Netherlands May 24, 1929.

The invention relates to a boat chock, more especially to a chock which rises in an inboard direction so as to form a sloping runway over which the boat can slide {outwardly by gravity. A boat chock in accordance with the invention comprises an outwardly sloping section iron, which at its outer end only is directly secured to the deck, or to the sheerstra-ke, the inner end being supported by an upright section iron likewise secured to deck at one point only.

Such a chock, which is very light and is cheap to make, has the advantage over the ,usual chocks of entirely clearing the deck,

so that the joints between the planks are always accessible throughout. In addition,

if during the construction of the vessel small angles or the like are secured at the outset to the underlying steel deck or to the frames at the two points where the chock is to be fastened to the deck, the wooden deck can be completely finished before the boat chocks are fitted into place.

This chock construction is of Value especially when inboard boats are used. If both section irons of which each chock for an outboard boat is composed according to the invention are hinged to the deck and, moreover, detachably interconnected, the device can be made so that both sections, after being collapsed on to the deck, to-

gether form a continuous runway for the corresponding (sliding) chock of the i11- board boat. This greatly facilitates the shifting of the inboard boats towards the ships side.

Furthermore, in accordance with the invention, the chock may be provided with a shaft extending athwartships and supported in hearings in the sloping section, and in some cases also in the upright section, said shaft having at its outer end an abutment which, when assuming an upright position, engages the keel of the boat so as to prevent the latter from sliding downwardly. Said shaft may be provided at one end, preferably at its inner end, with a lever arm detachably connected with a boat-grip, for instance, through a slip hook. If the chock is formed by section irons which are hinged to the deck, the upright section may, in accordance with the invention, be detachably coupled with a boat-grip, for instance, through a sliphook. The last mentioned two measures permit of both the boat-grip and the said abutment, or the upright section, to be simultaneously released by'a single operation,

and this is important with a view to the outer end of which is secured to the sheer- Strake 4:. The inner end is secured, through "a fish plate 5, to; an upright section iron 6,

the lower end of which is secured to an angle iron 7 fastened to the steel deck 8. The boat 9 is supported by the section iron 3 through a boat skate 10. Detachably con nected to the boat skate through a bolt 12 is a wooden block 11 for supporting the outboard side of the boat.

A horizontal shaft 13, which extends athwartships, is rotatably supported in eyes of the section irons. 3 and 6. At itsouter end it is provided with an abutment 1 1 which, when in an upright position, as illustrated in the drawings, engages the outer side of the boat keel and thereby prevents the boat from sliding downwardly. The

inner end of the shaft 13 has an offset portion forming a handle 15, which is pivotally connected with a slip-hook 16 by means of which the boat-grip 17 can be fastened.

The drawings clearly show that the deck below the chock is completely cleared by the latter, so that, for instance, the joints between the planks can always be caulked over their full lengths. It further shows that the chock can be fitted into place in a very simple manner, even after the planking has been laid, if, during the construction of the vessel, the angle iron 7 has been riveted in the required position to the steel deck 8.

and 2, respectively, of the an l l i i not sufficiently slope down.

Fig. 1 also shows a winch 3O fitted in the space enclosed by the fish plates 5 and the section irons 3, 6. By means of said winch and of a cable or rope 31 the boat may be forced outboard if the section iron 3, owing to a considerable list of the vessel, should The cable or rope 31 is led around a roller 32 mounted at the lower end of section iron 3. and engages a hook 33 of the boat skate 10.

\Vith the construction shown in Figure 2, the outboard boat 18 is supported by a chock in accordance with the invention, whereas the inboard boat 19 rests on an ordinary (outwardly sloping) chock 20, which is slidable athwartships in a chute 21 of channel 1 iron.

The chockof the outboard boat is hinged to the deck both at its outer and at its inner end 22 and 23, respectively. Moreover, the two composite parts of r the chock are not rigidly, but detachably connected to one another, the interconnection being efiected by a loose eye-bolt 2 1, through the eye of which the slip-hook 16 of the boat-grip 17 is passed,

so that both the grip and the eye-bolt are released when the slip-hook is unlocked. It,

thereupon, the eye-bolt is'retracted, the section iron 3 may be collapsed on to the deck and the sectlon iron 6 may be knocked down in an lnboard dlrection into alignment with section 3, so as to form, together with the at one point only. 7

2. Boat chock in'accordance with clalm 1,

characterized by this, that a winch is fitted in the space enclosed by. the fish plates by said winch being associated with means for pulling the boat outboard.

3. Boat chock 1n accordance wlth claim 1,

7 characterized by this, that both section irons are hinged to the deck so as to be adapted for an athwartships swinging motion, said sections being detachably connected to one another so that, when collapsed on to the deck, they form a continuous runway for the chock of an inboard boat. V

a. Boat chock in accordance with claim 1, characterized by this, that supported in bearings in the sloping section, and in some cases also in the upright section, is a shaft extending athwartships and provided at its outboard end with an abutment, which when in an upright position engagesthe keel of characterized by this that the upright section is, for instance by means of a slip-hook, detachably coupled with a boat-grip.

In testimony whereof I aiiix my signature.

A. P. SCI-IAT.

which both section irons areinterconnected, a. 

